Stop mechanism.



4 SHEETS-SHEET l.

Inl; 6 L Mk.. iam@ M @dn/@5 Se s. j@ :M- 50% THE MORRIS PETERS CO., PHOTO-LITHO.. WASHINGTON. D. C

.|. A. PAIGE.

STOP MECHANISNI.

APPLICATION-mm JULY 25. 1912.

Patentedumw 15, 1915.

wif/71,656 es.

THE NDRRIS PETERS CO4. F'HOTQLITHO., WASHINGTON. D. C4

J. A. PAIGE.l

STOPYMECHANISM.

APPLICATION FILED IuLY 25, I9I2.

1,1425906. Patented June 15, 1915.

4 SHEETS-SHEET 3.

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, n www? MCX' THE NORRIS PETERS CO., FHOTO-LITHO.. WASHINGTON, D.'C4

J. A. PAIGE.

STOP MECHANISM.

APPLICATION FILED JULY 25,1912.

Patented June 15, '1915.

4 SHEETS-SHEET 4.

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| HE NURRlS-PETERS 50,. PHOTO-LITHO.. WASHINGTON. D. C.

ma@ gmwnnr onnron JEREMIAI-I ALTON PAIGE, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO LFRED A. ZIEGLER, TRUSTEE, 0F BOSTON, MASSACHUSETTS.

STOP MECHANISM.

Specification of Letters Patent.

Patented June 15, 1915.-

Application led July 25, 1912. VSerial No. 711,380.

To all whom t may concern Be it known that I, JEREMIAH AL'roN PAIGE, a citizen of the United States, residing at Roxbury, Boston, in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in Stop lVIechanism, of which the following is a specification.

This invention relates to new and useful improvements in stop mechanisms and is particularly adapted for use in that class of machines known as fly frames in which strands of brous material, sometimes called slivers or roving, are led through'guides to drawing rolls which attenuate said strands and deliver the same to be twisted and wound upon bobbins or passed along to the various machines adapted to accomplish the successive steps in the construction or formation of yarns or threads.

In addition to attenuating the strands or slivers until the required weight is attained, said strands are often doubled to create a more uniform strand. In the accomplishment of this result two or more strands are led through one guide and between said drawing rolls not however without a great deal of trouble owing to the looseness of the fibers constituting the strands. At this stage of the operation it is extremelyT diiiicult to feed the strands through guides and between said drawing rolls, as any undue tension or weight thereupon invariably causes aV breaky age, and where several of said strands are being fed into one guide to form a single strand if one of the strands should break, the finished strand which is being delivered from said drawing rolls would be very much undersized. A great many devices have Vbeen constructed in attempting to prevent such an occurrence. These devices however are objectionable for the reason that they place too much weight upon the Vstrands causing them to stretch and sometimes break.

The object of this invention is to provide a simple device which is adapted to detect a breakage of the strand and to speedily stop the strand feeding instrumentalities in time to splice the same before the loose end has been carried between the drawing rolls.

A nother object is to provide adevice comprising a protector adapted to be'sustained by a 'strand or sliver' without imposing any undue strain upon said strands during the feeding thereof.

Still another object is toprovide means to cause the breakage'of asliver or strand in case the same is oversize.

With these ends in view. my invention consists in certain features of novelty in the construction, combination and arrangement of parts by which the said objects and certain' other objects hereinafter appearing are.

said machine Vbeing broken away to save space in the drawings. Fig. 2 is a rear elevation of the portion of the machine illustrated in Fig. 1. Fig. 8 isa detail sectional elevation taken on line 3 8 of Fig. 1. Fig. 4 is a section, partlyin elevation, taken on line lfi of Fig. 2. Fig is a sectional elevation taken on line 5 5 of Fig. 1. Fig. 6 is a section, partly in elevation, taken on the irregular line 6 6 of Fig. 1. Fig. 7 is a transverse section taken on line 7 7 of Fig. 1 illustrating the rotary feeler bar, and the detector' shown in its normal suspended position in full lines, while the dotted lines illustrate said detector released and in its lowermost position. Fig. 8 is a section partlyV in elevation taken on line 8 8 of Fig. 3. Fig. 9 is a detailtransverse section on line 9 9 of Fig. 8. Figs. 10 and 11 are detail views of the rotatable lfeeler bar locking means'in its unlocked and locked positions respectively with portions of the cooperating parts broken away to save space. Fig. 12 is a detail side view of the latchby which said feeler bar locking means is rocked, said locking lever being shown in same are to be unwound, thence in contact with a suitable guide, preferably a guide bar 16, through the guides 17 formed in the traverse bar 18 and between the usual drawing rolls 19 from which they are delivered to the winding and twisting devices well known to those skilled in the art.

rlhe drawing rolls 19 are operatively connected to the main driving shaft 20 by any suitable means, that shown being a train of gears 21. r1`he driving shaft 20, from which the various mechanisms of the machine are driven, is journaled to rotate in suitable bearings in the frame of the machine and is provided with a tight pulley 22 and a loose pulley 23, said pulleys being rotated by means of a belt Q4, which receives its motion from any suitable source not shown.

The strands 15 are ordinarily led in pairs, such as 15ZL and 15b, 15C and 15, into the traverse bar guides 17, which guide said strands between said drawing rolls. lThe nature of said strands is such that any undue strain or tension thereupon will cause a les " breakage which results in what is known as singles, or in other words, should the strand a be broken in advance of the traverse bar guideA 17, the strand b would continue through said guide 17 and the drawing rolls 19, whereupon the strand delivered from said drawing rolls would be smaller in diameter than that resulting from the doubling of the strands a and b, or c and CZ. To prevent such an occurrence, means are provided to engage each of said strands between said guide bar 16 and said traverse guides 17 and to be normally sustained by said strands as long as said strands remain intact. Upon the breaking of one or more of said strands, said means are adapted to engage certain instrumentalities, hereinafterl more fully described, to discontinue the feeding movement of said drawing rolls and all other mechanism connected with the Vfly frame,

. preferably by the shifting of the belt 24 from the tight pulley 22 to the loose pulley 23.

The means hereinbefore referred to for discovering a breakage of the strands 15 are embodied in detectors 25 (see Figs. l, 2 and 7 r)The detectors 25 are preferably constructed of flat material of suitable thickness and comprise a wide portion 26 and a relatively narrow portion 27, one edge of the portions 26 and 27 being joined by an inclined surface 23, while the opposite edges of said portions preferably aline one with the other.

Secured at the upper end of the portion 26 is an openly coiled wire 29 constituting an eye 30 through which a strand of normal diameter is permitted to be moved. The detectors 25 are mounted in guides 31 and 32 formed in a tubular rectangular support 33 Vwhichfpermit a vertical reciprocatory movement of said detector. A rotatable feeler bar 34 is journaled to rotate in bearings 35 within said tubular support and is preferably square in cross section to form tangentially disposed faces which provide an irregular periphery, and upon being revolved is adapted to increase and diminish the direct radial distance between said periphery and the wall 33 of said support. A cylindrical sleeve 36 is secured to said square feeler bar by screws, 37, said sleeve constituting the journals for said bar which engage said bearings. Collars 38 are secured to said sleevesto prevent an endwise movement of said feeler bar within said bearings 35. rlChe support 33 is mounted upon the fly frame in any suitable manner, preferably by clamping the same to the uprights 39 by means of clamping members l0, and upon this support are secured brackets 4l which support the guide rod 16. A rotary motion is imparted to said rotatable feeler bar 3i preferably from the driving shaft 20. As one convenient method of rotating said feeler bar, l have provided a sprocket -l-Z secured upon the shaft 43, which constitutes the driving shaft for the lower member of the first set of drawing rolls 19, this shaft being rotated through the train of gears 21 operatively connected` with the main shaft 20. A second sprocket gear la secured to a counter shaft and journaled to rotate in bearings formed in a portion of the frame 4-6 is operatively connected with the sprocket 42 by a chain 7. while a third sprocket #i3 transmits through the chain 49 at a very much reduced speed, a rotary motion to the sprocket gear 50 which is formed upon the driving member of the clutch 51.

Although I have elected to rotate the feeler bar 341 and the drawing rolls 19 through the same instrumentalities, namely the driving shaft 20, belt 211 and gears 21, independent driving means for each of said mechanisms may be employed without departing from the spirit of the invention. Upon the stopping of the rotation of said feeler bar 34C by the dropping of any one of the detectors 25, normally inactive actuating means are brought into action to discontinue the movement of the strand feeding mechanism, said actuating means preferably consisting of levers 52 pivotally mounted upon studs 53 secured in the collar 5lwhich constitutes the driven member of the clutch 51 and is fast to the rotatable feeler bar Springs 55, one arm of which engages the collarA 5.4: and the other arm engages said levers, are adapted to retain said levers in their normal positions, as shown in full lines in Figs. 1, 2, 3, 6 and 10.

The `positions mentioned are maintained by said levers during the rotation of the feeler bar. When, however, the rotation of the feeler bar is stopped the driven clutch member 54 and the driving member 56 which may have any suitable frictional engaging surfaces, but preferably projections 57 and depressions 58, are disconnected and a relative movement therebetween is created by the continued rotation of said driving member 56.

Extending laterally from the driving member 56 are pins 59 which are preferably arranged 90 apart for the purpose hereinafter set forth, as are the pivots 53, and in positions to be engaged by the ends of the levers 52 during said relative movement.

To permit the disengagement of the proj ections 57 and the depressions 58, the driving member 56 is rotatably mounted upon a sleeve 60 which is retained in nonrotatable engagement with the frame'46, said sleeve being hollow to receive the end of the feeler bar 34. Interposed between the end of the member 56 and the frame 46 is a helical compression spring 61, which retains said projections in engagement with said depressions whereby a rotary motion is imparted to said driven member 54 just as long as conditions remain normal when however undue or abnormal pressure is brought to bear upon said rotatable feeler 34, said depressions and projections are disconnected, as hereinbefore stated, and the spring 61 compressed. The movement of the driving member 56 to compress the spring 61 is not sufficient however to move the pins 59 far enough out to clear the ends of the levers 52, consequently upon the movement of said pins, said Vlevers are rocked upon their pivots until said pins escape the ends thereof, whereupon the springs 55 return said levers to their normal positions.

Pivotally mounted upon the stud 62, at

one side of the driven clutch member 54 upon y the frame 46 is a locking lever 63, the pivotal axis thereof being substantially in alinement with one of the pivotal axes of the levers 52 after, said collar 54 has come to a stop.

Upon the rocking of that one of the levers 52, whose axis is substantially alining with the stud 62 by the relative movement of its respective actuating pin 59 the hook 64 on said lever contacts with the spring detent 65 which is pivoted at 66 to the projecting arm 67 of the lever 63 (see Figs. 10, 11 and 12). Through the continued rocking movement of said lever 52 said lever 63 is rocked from the position illustrated in Fig. 10 to that indicated in Fig. 11 at which time a lug 68 on said lever 63 will be moved into a position above the stud 53, upon which the lever 52 is pivoted. In consequence thereof said stud is prevented from moving upwardly and the feeler bar will be locked against rotation. This position is retained by said locking means until the end of the lever escapes from the pin 59 when said lever 52 will be returned to its normal position by its spring 55 and the lever 63 will be returned to its normal position by the extension spring 69, said normal position being with said levers 63 engaging the pin 70 secured in the frame 46.

The reason for pivoting the detent 65 upon the lever 63 is to permit the ends 64 of the levers 52 to pass by said lever 63 during the rotation of the collar 54 and the rotatable feeler bar 34, the spring 71 being provided to return said detent to its normal position, as shown in Fig. 12, after the passage of said levers 52. Located upon the opposite side of the rotatabler feeler bar 34 from that upon which the lever 63 is pivoted is a lever 72 pivoted upon a stud 73 fast in the bracket 74 which is secured upon the tubular support 33. The normal position of the lever 72 is indicated in full llines in Fig. 3 the same being retained in such position by the spring 75 which is also secured to saidtubular support 33.

During the rotation of the collar 54, which will be in the direction of the arrow 11, Fig. 3, the levers 52 as they are carried around with said collar 54 engage alateral projection 76 constituting a part of the lever 72. Said projection 76 is formed integral with the rod 77 which extends longitudinally of the lever 72. To said rod 77 is secured a sleeve 78 which is journaled in the tube 79. A helical extension spring 80 encircles said rod 77 and is secured at one end to said sleeve 78 and at'the opposite end to a collar 81 secured to the interior of the sleeve 79, while at the opposite end of said rod 77 from said lateral projection 76 is securedl a segmental stop 82 projecting through a segmental slot 83 formed in the tube 79 which permits a limited rocking movement of the rod 77 and is retained in its normal position as indicated in Figs. 8 and 9 by the spring 80. This rocking movement is provided to permit said lateral projection 76 to be depressed from its position illustrated in Figs. 3 and 9 to that indicated in dotted lines in Fig. 9 by the successive engagement of the ends 64 of the levers 52 as they are revolved with the collar 54. Upon the stopping of the collar 54, by

means hereinbefore described, one oftheVV levers 52 will come to a stand still with the aXis of its pivotal pin 53 substantially in alinement with a horizontal plane containing the median axial line of the lateral p rojection 76, as illustrated in Fig. 3. The pins 59 then engage said last named lever 52 and rock the same upon its pivot whereupon the hook 64 engages the lateral projection 76 and said lever 72 will be rockedupon its pivot 73 into the position illustrated byV dotted lines in said figure. l

In order to permit the lateral projection 76 to remain in contact with the hook 64 during the continued upward movement of thehook 64 on said lever 52, the rod 77 of which said projection 76 forms a part is permitted to telescope the sleeve 79 of the lever 72, the slot 83 in said sleeve 79 being clongated thereby permitting a longitudinal movement of the stop S2. The longitudinal movement of the rod 77 is opposed by the spring 30 which returns said lateral projection 76 to its normal position immediately upon the release of the lever 52 by the passing of the pin 59 out of contact therewith.

Various means may be employed for discontinuing the rotation of the driving shaft 20, but the preferred means and that commonly employed in machines of this class, comprises a shipper Sil suspended from a shipper rod 85 which is arranged to slide in suitable guides in the frame of the machine. The usual method of moving said rod to ship the belt from the tight to the loose pulley or vice versa being levers arranged in convenient positions lengthwise of the machine and being old and well-known to those skilled in the art, they are not shown in the drawing. Suffice it to say the shipper rod is at all times free to be moved in either direction by said levers.

Encircling the shipper rod 85 is a helical compression spring 36 which bears at one end against a bracket 87 secured to the frame of the machine. rlhe collar 33 provided with a shoulder S9 is loosely mounted upon said shipper rod and engages the opposite end of said spring 36, while secured to said rod S5 is a second collar 90.

Upon the movement of the shipper rod to ship the belt from the loose pulley 23 to the tight pulley 22 the collar 90 engages the collar 88 and compresses the spring 86. At the end of said movement after the belt 24 has been shifted to the tight pulley the spring detent 91 pivoted at 92 upon the bracket 93 secured to the frame of the machine is moved upwardly by a spring 9st (see Fig. ll) and into engagement with the shoulder 39 of the collar 33, thus removing the pressure exerted by the compression of the spring 86 from the collar 90, thereby permitting the shipper rod to remain in said last named position, hence when it is desired to shift the belt 24 from the tight pulley to the loose pulley the same may be accomplished without disturbing the collar 88, and the spring 86 may be left in its compressed state.

rlhe vdetent 91 extends beyond the collar 38 between guides 95 in the bracket 93 and beneath the end of the lever 72, and upon the upward movement of said detent in engaging the shoulder 39, the same will engage the under side ofthe lever 72 which at this time will occupy the position illustrated in full lines, Fig. 3, and in position to be actuated bythe movement of the levers 52.

Referring now to Figs. 1 and 2, it will be noted that the detectors 25 are arranged in groups of four, this being for convenience in operating the same and in order that they may properly aline with their respective sets of drawing rolls and traverse bar guides.

To save time and to facilitate the .resetting of the detectors 25 in their normal positions and out of engagement with the feeler an elevator 96 is provided which comprises aI U-shaped member with legs 97 slidably mounted in the tubular support 33 to move in a direction parallel with said detectors and upon opposite sides of each series of detectors. The closed end 98 of said U-shaped member is located beneath the support 33 and is provided with a plate 99 extending between the legs 97 and adapted upon the upward movement of said ll-shaped member to engage the lower ends of the detectors 25 and to move these detectors which are depressed, upwardly and out of engagement with the rotatable feeler 34, in which position they are held by said elevator until the strands have been led through the eyes in said detectors and between the drawing rolls 19.- rlhe upper ends of the legs 97 are provided with heads 100 which limit the downward movement of said elevator also constitute finger pieces bv which said eleva tors may be depressed after the above mentioned operation has been completed.

By reference to Fig. 7 it will be noted that the lowerA guides 32 for the detectors 25 re wider than the narrow portion 27 of said detectors. rlhis is provided in order that the detectors 25 may be slightly tilted while in their uppermost positions by the movement of the strands 15 through their eyes 39 in the direction of the ar 1ow lt will also be noted that the wider portion 26 of each of said detectors is of the same width as the guide 31, therefore to permit the tilting of said detector a recess 101. is formed therein in its straight side and at such a position that the upper inclined surface 102, which forms a portion of said recess and is inclined in an opposite direction to the inclined surface 28, will engage the upper edge of said guide 31, when said protector is in its uppermost position as indicated in full lines in Fig. 7. lThe lower ends of the detectors 25 are cut away to form the narrow portions 27 this being sufficient to permit said detectors to clear the corners of the rotatable feeler bar 34 during its rotation when said detectors are in their inclined positions. llhen the strand 15 breaks and the detector starts to drop to the position illustrated in dotted lines in Fig. 7, the inclined surface 28 irst contacts with one of the 'corners of said rotatable feeler and is prevented from continued downward movement until said feeler is rotated, whereupon the weight of said detector is suflicient to carry it to its lowermost position transversely of and into engagement with the plate 99 and tangentially engaging said feeler. A pin 103 is provided in each of the detectors to limit the upward movements thereof.

The general operation of the device hereinbefore described is as follows: The several series of detectors are elevated by their elevating means and the strands or slivers are led up or down, as the case may be, around the guide bar 16 through the eyes 30 in the detectors and led in pairs through the traverse bar guides 17 and between the drawing rolls 19. The elevator 96 is then lowered by pressing upon the heads or finger pieces 100, thus leaving the detectors sustained by the strands with their inclined surfaces 102 in contact with the upper corner of the guide 31. The belt 24 is then shifted from the loose pulley 23 to the tight pulley Y 22 by the movementof the shipper rod S5 toward the right of Fig. 1 until the detent 91 engages the shoulder 89 of the spring4 compressing collar 88. By the shifting of said belt the drawing rolls are rotated which feed the strands 15 through the eyes 30 on the detectors 25, while the feeler bar 34 is also-rotated through the clutch 51 and its actuating instrumentalities hereinbefore described. Upon the appearance in any one of said strands 15 of a knot or lump which is too large to pass through the eyes 30, the

strand containing said lump will be broken, or should a weak place appear in one of the strands which would render the same incapable of sustaining its detector, the detector being released thereby would drop into a position between said rotatable feeler bar 34 and the side 38 of the stationary support, moving transversely of said support and assuming a tangential position relatively to said feeler bar, as illustrated in dotted lines in Fig. 7 and consequently stop the rotation of said feeler bar. By the stopping of the rotation thereof a relative movement is created between the members 54 and 56 of the clutch 51, whereupon the levers 52 will be operated by the pins 59 and the lever 68 brought into a position above the pivot of the lever 52 adjacent thereto which positively locks said collar 54 and feeler V34 against rotation for a short interval of time, or in other words, as long as said lever 52 is engaged by its actuating pin 59. Simultaneously with said locking movement the lever upon the opposite side of the collar 54 vis being rocked by its actuating pin which in turn rocks the detent 91 thereby releasing the spring compression collar 88 which'engages the collar 90 on the shipper rod 85 and forces said shipper rod and shipper 84 to the position illustrated in dotted lines in Fig. 1, thus shifting the belt 24 to the loose pulley 23 and discontinuing the movement of the drawing rolls and the instrumentali-V ties which rotate the driving member of the collar 51. The detector vwhich caused the discontinuance of the driving instrumentalities is then elevated by its elevator, the broken strand spliced andthe elevator depressed whereupon said machine is ready to y substituted for those herein shown and described without departing from the spiritk of the invention, and no undue limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible in view of the prior art.

Having thus described my invention what I claim and desire by Letters Patent Vto securo is:

1. A device of the class described having, in combination, mechanism adapted tofeed a strand, a rotatable feeler bar having varying outside dimensions in the same transverse plane, a relatively stationary member, a detector normally sustained by said strand and adapted, upon the breaking thereof, to drop in a tangential path relatively to said Avrotatable feeler bar between said stationary member and thesmaller portion of said rotatable feeler bar and engaging said feeler bar, to stop the rotation of said bar, and normally inactive means rendered active by the stopping of said rotatable feeler'bar adapted to discontinue the movement of said strand feeding mechanism.

2. A device of the class described having, in combination, av rotatablefeeler bar provided with a fiat face disposed substantially at right angles to a radial line extending from the axis of said feeler bar to the nearest point in said face to said aXis, means adapted to impart a rotary motion to said bar, a stationary member, a detector normallyv sustained by a strand, adapted, upon being released by said strand, to drop be-` tween said iat face and said stationary member and stop the rotation of said bar, with said flat face substantially parallel with said stationary member, and normally inactive means rendered active by a continued movement of said rotating means relatively to said bar. n

3. A device of the class described having, in combination, a tubular support, a feeler bar journaled to rotate in said' support, .said

feeler bar being provided with a at face,V

a plurality of detectors mounted to slide on said support transversely of the medium axial line of said bar, and normally sustained by strands, said detectors adapted, upon the breaking of said strands, to drop between and engage said flat face and a portion of said support to stop the rotation of said feeler bar. means adapted to rotate said feeler bar and normally inactive actuating means on said bar adapted to be operated by the movement of said feeler bar rotating means relatively to said feeler bar.

4. A device of the class described having, in combination, a stationary support, a feeler bar rotatably mounted on said support, and provided with an irregular periphery, said feeler bar being adapted, upon the rotation thereof, to increase and diminish the direct radial distance between said periphery and one wall of said support, a detector adapted to be moved vertically between said wall and said bar, and substantially equal in width at one portion thereof to the greatest space obtainable between said wall and the adjacent portion of the periphery of said bar, said detector beingV normally sustained by a strand and adapted, upon the breaking of said strand, to drop into position to occupy said greatest space to stop the rotation of said bar, means adapted tor impart a rotary motion to said feeler bar, and normally inactive means on said bar rendered operable by the continued movement of said rotating means while said bar remains inactive.

5. A device of the class described having, in combination, mechanism adapted to feed strands, a tubular support, a shaft journaled to rotate in said support, and provided with a plurality of flat faces, means to rotate said shaft through frictional contact therewith, a plurality of detectors carried by said support provided with guides for said strands, said detectors also comprising inclined surfaces adapted to engage said support and to sustain said detectors during the feeding of said strands through said guides, said inclined surfaces adapted, upon the breakage of said strands, to permit said detectors to engage said support 4and one of the faces on said shaft and to stop the rotation of said shaft, and means on said shaft adapted to be operated by the continued movement of said frictional driving means relatively to said shaft, to discontinue the movement of said strand feeding mechanism.

6. A device of the class described having, in combination, mechanism adapted to feed strands, a tubular support, a shaft journaled to rotate in said support, and provided with a plurality of flat faces, means to rotate said shaft through frictional contact therewith, a plurality of detectors carried by said support provided with guides for said strands, said detectors also comprising inclined surfaces adapted to engage said support and to sustain said detectors, through frictional contact with said support, during the feeding of said strands through said guides, said inclined surfaces adapted upon the breakage of said strands, to permit said detectors to engage said support and one of the faces on said shaft and to stop the rotation of said shaft, and means on said shaft adapted to be operated by the continued movement of said frictional driving means relatively to said shaft to discontinue the movement of said strand feeding` mechanism.

7. A device of the class described having, in combination, a rotatable member, a clutch operatively connecting said rotatable member, instrumentalities adapted to rotate said clutch, stopping means for said instrumentalities, means normally withheld from contact with said rotatable member adapted to be moved into contact therewith to stop the rotation thereof, whereby the driving and driven members of said clutch are disconnected and a relativemovement therebetween created, a lever pivotally mounted on one of said clutch members, a pin on the other of said clutch members adapted to rock said lever upon its pivot upon the movement of one of said clutch members relatively to the other, and means actuated by the rocking of said lever adapted to operate said stopping means. 1

S. A device of the class described having, in combination, mechanism for feeding strands, a rotatable member, means normally sustained by said strands adapted to be re leased by breakage thereof and to stop the rotation of said rotatable member, a driving clutch through which a rotary motion is transmitted to said rotatable member, said clutch comprising driving and driven members adapted to be disconnected by the stopping of said rotatable member, means actuated by the movement of one of said clutch members relatively to the other adapted to positively lock said driven clutch member against rotation, and means operated by said lock actuating means adapted to discontinue the movements of said strand drawing mechanism.

9. A device of the class described having, in combination, a rotatable member, a collar secured on said rotatable member, a second collar rotatably mounted adjacent to said first collar, mechanism to impart a rotary motion to said loosely mounted collar, means to yieldingly press said collars together whereby a rotary motion will be imparted to said member, means adapted to be moved to engage said member and to stop the rotation thereof whereby a relative motion between said collars will be created, a plurality of levers pivoted upon one of said collars, a plurality of pins upon the other of said collars adapted to rock said levers upon their pivots during said relative movement, and actuating means adapted to be operated by the rocking movement of said levers respectively.

10. A device of the class described having, in combination, a rotatable member, al collar secured on said rotatable member, a second collar rotatably mounted adjacent to said first collar, means to yieldingly press said collars together whereby a rotary motion will be imparted to said member, means adapted to be moved to engage said member and to stop the rotation thereof whereby a relative motion between said collars will be created, a plurality of levers pivoted upon one of said collars. a plurality of pins upon. the other of said collars adapted to rock said levers upon their pivots in one direction during said relative movement` springs to rock said levers in the opposite direction and actuating means adapted to be operated by the rocking movements of said levers respectively.

11. A device of the class described having, in combination, a rotary shaft, a collar secured thereto, a second collar mount-ed to rotate adjacent to said first collar, mechanism adapted to rotate said loosely mounted collar, projections on one of said collars adapted to engage depressions on the other of said collars, a spring to retain said projections and depressions in engagement, whereby a rotary motion may be transmitted to said shaft, means adapted to stop the rotation of said shaft, whereby said projections and said depressions will be disconnected to create a relative motion between said collars, a plurality of studs secured to said fixed collar, a lever pivotally mounted upon each of said studs, a plurality of pins on said loosely. mounted collar adapted to engage said levers during the movement of said collars relatively to each other to rock said levers in a forward direction, springs adapted to rock said levers in a reverse direction, a rocker arm adapted to be engaged by one of said levers during the forward rocking movement thereof, and means rendered active by the rocking of said arm.

12. A device of the class described having, in combination, a rotary shaft, a collar secured thereto, a second collar mounted to rotate adjacent to said first collar, mechanism adapted to rotate said loosely mounted collar, projections on one of said collars adapted to engage depressions in the other of said collars, a spring to retain said projections and depressions in engagement, whereby a rotary motion may be transmitted to said shaft, means adapted to stop the rotation of said shaft, whereby said projections and 55 said depressions will be disconnected to crelevers during the movement of said collars relatively to each other to rock said levers in a forward direction, springs adapted to rock said levers in a reverse direction, means adapted to be actuated by the movement of one of said levers to lock said fixed collar against rotation, a rocker arm adapted to be engaged by one of said levers during theV forward rocking movement thereof, and

means rendered active by the rocking of said strands, a rectangular supporting tube, a

square shaft rotatably mounted in said tube, means adapted to rotate said shaft, a plurality of series of detectors slidably arranged in said tube intermediate one wall lthereof and said shaft, said detectors being each provided with a guide eye adapted to engage a strand and to be normally sustained thereby, said detectors adapted to be released by the breaking of their respective sustaining strands and to drop between one of the faces of said shaft and the adjacent wall of said support to stop the rotation of said shaft, and means adapted to be actuated by the stopping of said shaft relatively to Asaid rotating means, to discontinue the feed ing of said strands.

14. A device of the class described having, in combination, mechanism adapted to feed strands, a support, a square shaft rotatably mounted on said support, means adapted to rotate said shaft, a plurality of series of detectors slidably arranged on said supporty intermediate one wall thereof vand said shaft, said detectors being each provided with a guide eye adapted to engage a strand and to be normally sustained thereby, said detectors adaptedv to be released by the breaking of their respective sustaining strand and adapted to slide between one of the faces of said shaft and transversely of the adjacent wall of said support to stop the rotation of said shaft, means adapted to be actuated by the stopping of said shaft relatively to said rotating means, adapted to discontinue the feeding of said strands, and means adapted to simultaneously elevate one of said sets of detectors from their locking Y guide eye adapted to engage a strand and to be normally sustained thereby, said detectors adapted to be-released by the breaking or" their respective strand and to engage said shaft and to stop the rotation thereof, means adapted to be actuated by the stopping of said shaft relatively to said rotating means, adapted to discontinue the feeding of said strands, an elevator mounted in said support to move in a direction parallel with said detectors to simultaneously elevate one of said sets of detectors from their shaft locking positions, to their normal positions and finger pieces on said elevator for depressing the same.

16. A device of the class described having, in combination, a stationary member, a rotary member adapted to coperate with said stationary member, a detector provided with an eye adapted to receive a strand, said de- Y tector having a narrow portion'adapted to be held by said strand between said rotary member and said support and permit said rotary member to rotate, said detector, also having a wide portion adapted to be moved between said stationary member and said ro tary member by the breaking of said strand, to stop the rotating of said rotary member, an inclined face on said detector adapted to engage said stationary member and assist said strand in supporting said detector, and

a second inclined face on said detector adapted to coperate with said rotary member to retard the movement of the wicer portion of said detector between said rotary member and said stationary member upon the breaking ot said strand.

17. ln a device of the class described, a detector provided with an eye adapted to ref ceive a strand said detector also comprising relatively Wide and narrow portions, an inclined surface formed upon yone edge thereof, and a second inclined surface formed upon the opposite edge ot said detector and connecting the edges of said wide and narrow portions.

18. In adevice of the class described, a detector constructed of fiat material and comprising' relatively wide and narrow portions, and an openly coiled wire constituting an eye secured at one end thereof, the opening through said coil extending substantially parallel to the Widest dimension or' said detector and adapted to receive and permit the free passage of a strand of normal diameter.

ln testimony whereof have hereunto set my hand in presence of two subscribing wit-- JEREMAH ALTQN PAGE. Witnesses:

CHARLES S. GOODING,

DANIEL A. RoLLINs.

Copies of this patent may be obtained for ve cents each, 'by addressing the Commissioner of Patents, Washington, D. C. 

